Features
The Geological Society of America
Washington as a Convention City
The New Copyright Bill Now Before Congress
An Improved Cable Grip
An Improved Parallel Ruler
An Easily Operated Telegraph Instrument
The Ginseng
The Malleco Viaduct, Chilian State Railway, Collipulli, Chili
Interesting Optical Illusions
The Sign Language of the American Indians
The Magnetic Magnifying Glass and the Box of Numbers
Scientific American Building Edition- January 10, 1890
To Inventors- January 10, 1890
Departments
- Letters
Correspondence- January 10, 1890
- Recommended
New Books and Publications- January 10, 1890
- Departments
Notes and Queries- January 10, 1890
Business and Personal- January 10, 1890
Recently Patented Inventions- January 10, 1890
Index of Inventions- January 10, 1890
